Arizona State hockey star Matthew Mayich, who was selected by the Chicago Blues in the NHL draft, collapsed during an offseason training session and was diagnosed with exertional heat stroke, according to his attorney. The heat stroke severely limited oxygen delivery to his brain, prompting immediate medical intervention and a prolonged recovery period. Mayich’s case has raised concerns about athlete safety in high‑intensity training environments, especially during hot weather. The player’s legal team is monitoring his medical progress closely as he works toward a return to the ice.

Matthew Mayich, the Arizona State hockey player and Blues draft pick who collapsed in an offseason workout, suffered exertional heat stroke that reduced the flow of oxygen to his brain, his attorney told ESPN.